Acer AL1512sg Manual de usuario

Acer AL1512

Service Guide

Service guide files and updates are available

on the CSD web : for more information,

Please refer to http: csd.acer.com.tw

Table of Contents

Chapter 1 Monitor Features…………………………………………….…. 8

1.1 Test conditions……………………………………….……….… 8

1.2 Features…………………….………………………………….... 8

1.3 LCD Panel specification………………………………………... 9

1.4 Connector Pin Assignment………………………...…..……...12

Chapter 2 OPERATING INSTRUCTIONS………..….………….……14

2.1 Function Name…………………………….…….………………14

2.2 OSD Menu Description…..……………….…….………………16

2.3 OSD Operation…………………………….…….………………17

2.4 OSD Function Definition……...………….……….…………….18

2.5 Plug and Play…………………………….…………………...…19

2.6 Power Saver……………………………………………………..19

Chapter 3 Machine Disassembly and Assembly……..………….……20

3.1 Machine Disassembly……………………………………..……20

3.2 Machine Assembly……………….…………………………...…23

Chapter 4 Troubleshooting……………………...……….………….………27

4.1 Abnormal display Troubleshooting…………………….………27

4.2 Abnormal (On/Off, LCD Display, K/B) Troubleshooting……..29

4.3 Abnormal (BIOS, OSD, Other Display) Troubleshooting……30

4.4 Audio Abnormal………………………….…………………..…..31

Chapter 5 Connector Information…………...……….…………………....32

5.1 Function Block Diagram………………………………….…..…32

5.2 Connector Location……..………………………………….……33

5.3 Main Board Pin Assignment Introduction…………….….……34

Chapter 6 FRU(Field Replaceable Unit……...……….…………….……39

Chapter 7 Schematic Diagram…………….………………..………………42

Monitor Features

Chapter 1

1.1 Test Conditions

Item Condition

Temperature Normal room temperature (25±2℃)

Humidity 50±10%

AC input voltage 100V±2V, 120±2V, 60Hz / 230±2V, 50Hz

Signal Level 0.7Vp-p

Brightness Maximum with OSD setting

Contrast Middle with OSD setting

Resolution setting 1024 x 768 @60HZ

Color temperature With OSD setting

Measuring instrument Topcon luminance colorimeter BM-5A or equivalent

Others Before measuring, “Auto Config” & “Auto Balance” must be done in

advance

1.2 Features

 15” XGA TFT LCD Panel

 TN Mode Liquid Crystal

 D-SUB Input

 Audio Function (Optional)

 Support to 75Hz Refresh Rate

 Support VESA-DCC 2B plug & play function

 Support VESA-DPMS Power Management Function

 Wide Viewing Angle

 High Brightness

 High Brightness & Contrast Angular Dependent

 Fast LC Response Time

 Light Weight

1.3 LCD panel Specification

1.3.1 Optical Specifications

The relative measurement methods of optical characteristics are shown in 4.2. The

following items should be measured under the test conditions described in 4.1 and stable

environment shown in Note (4).

Item Symbol Condition Min. Typ. Max. Unit Note

Contrast Ratio CR 300 450 - - (2), (4)

6 10 ms

Response Time TF

17 25 ms (3)

Luminance of center point L

θx=0°, θY=0°

Viewing

Normal

Angle

250 350 - cd/

m2(2), (4)

Luminance(Angular dependent) LR- 1.5 1.7 - (2), (5)

Contrast (Angular-dependent) Cm 0.5 0.9 - - (2), (6)

Brightness Uniformity Uni. - 1.1 1.3 - (2), (4)

Rx 0.603 0.633 0.663 -

Red Ry 0.322 0.352 0.382 -

Gx 0.268 0.298 0.328 -

Green Gy 0.558 0.588 0.618 -

Bx 0.115 0.145 0.175 -

Blue By 0.069 0.099 0.129 -

Wx 0.281 0.311 0.341 -

Color

Chromaticity

White Wy

0.300 0.330 0.360 -

(2)

θx+ 50 60 -

Horizontal

θx- 50 60 -

θY+ 40 50 -

Viewing

Angle

Vertical

θY-

CR≥10

50 60 -

Deg. (1),(4)

Note (1) Definition of Viewing Angle (θx, θy):

12 o’clock direction

θy+ = 90º

6 o’clock

θy- = 90º

x- y+

y- x+

θX- = 90º

θX+ = 90º

Normal

θx = θy = 0º

Note (2) Definition of Contrast Ratio (CR):

The contrast ratio can be calculated by the following expression and figure

below.

Contrast Ratio (CR) = L255 / L0

L255: Luminance of gray level 255

L 0: Luminance of gray level 0

CR = CR (5)

CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note

(5).

Definition of luminance measured points and Brightness Uniformity:

Horizontal Line Number

512256

01023

768

Active area

576

384

192

: test point

X=1 to 5

Vertical Line Number

767

Horizontal Line Number [pixel]

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